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Engine Knock Sound NOT CCT - Videos

2.3K views 6 replies 5 participants last post by  Adamegan21  
#1 ·
Hello Guys,

I'm having a rattle/knocking sound on the right side (clutch side) of the engine.
The sounds happens when is at idle and barely dissapears once the engine pass the 3k rpm's, but I can notice if I'm close to the engine.

Here's a video :

https://vimeo.com/138147027

Ideas ? Thoughts ?

I disassembled the clutch cover and found everything in place, except that there's some play (backlash) between clutch basket gear and primary gear on the crankshaft. Here's a video showing it :

https://vimeo.com/138148665

Do you think that's normal or I should replace the entire clutch ?

To isolate if there was a engine problem, I removed the clutch completely and started the engine for 10 seconds, the knock sound was gone.

So I'm stuck if the problem comes from :

- Clutch basket
- Tranny (I rotated it manually and didn't find any abnormal sound)

Thanks a lot guys !
 
#5 ·
Same thing while the wheels are in the air (motorcycle lifted)

If I go for a ride, while its pulling and in gear, no sound.

If i'm in neutral or in gear but with no gas, just rolling, knock sound